Standard modular structure, guide rail type installationReal-time monitoring of dc overvoltage and undervoltage faults; Action time can be adjustedNo additional auxiliary power supply is required; Typical applications: dc motor, battery,UPS power supply, dc switchgear, dc panel, industrial control systemBoth over - voltage and under - voltage value can be adjusted2 sets of normally open and normally closed contacts; 2 indicator lights indicate various working conditionsColor: whiteMaterial: ABSPackage Contents:1X Voltage Monitoring RelayOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.